import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress'
import 'nprogress/nprogress.css'
import { getToken } from '@/utils/auth'
import { isRelogin } from '@/utils/request'

NProgress.configure({ showSpinner: false })

const whiteList = ['/login', '/register', '/auth']

router.beforeEach((to, from, next) => {
  NProgress.start()
  if (getToken()) {
    let iamParam = checkIamReLogin()

    to.meta.title && store.dispatch('settings/setTitle', to.meta.title)
    /* has token*/
    if (to.path === '/login') {
      next({ path: '/' })
      NProgress.done()
    } else {
      if (store.getters.roles.length === 0) {
        isRelogin.show = true
        // 判断当前用户是否已拉取完user_info信息
        store.dispatch('GetInfo').then(() => {
          isRelogin.show = false
          store.dispatch('GenerateRoutes').then(accessRoutes => {
            if (iamParam && iamParam.iamCode && iamParam.toParam) {
              switch (iamParam.toParam.split('__')[0]) {
                case 'todo':
                  let busKey = iamParam.toParam.split('__')[1]
                  if (busKey) {
                    busKey = '?businessKey=' + busKey
                  } else {
                    busKey = ''
                  }
                  location.replace(`${location.origin}/#/work/todo${busKey}`)
                  break;
                case 'own':
                  let ownBusKey = iamParam.toParam.split('__')[1]
                  if (ownBusKey) {
                    ownBusKey = '?businessKey=' + ownBusKey
                  } else {
                    ownBusKey = ''
                  }
                  location.replace(`${location.origin}/#/work/own${ownBusKey}`)
                  break;

                default:
                  location.replace(`${location.origin}/`)
                  break;
              }
            } else {
              // 根据roles权限生成可访问的路由表
              router.addRoutes(accessRoutes) // 动态添加可访问路由表
              next({ ...to, replace: true }) // hack方法 确保addRoutes已完成
            }
          })
        }).catch(err => {
            store.dispatch('LogOut').then(() => {
              Message.error(err)
              next({ path: '/' })
            })
          })
      } else {
        next()
      }
    }
  } else {
    // 没有token
    if (whiteList.indexOf(to.path) !== -1) {
      // 在免登录白名单，直接进入
      next()
    } else {
      next(`/login?redirect=${to.fullPath}`) // 否则全部重定向到登录页
      NProgress.done()
    }
  }
})

router.afterEach(() => {
  NProgress.done()
})

/**
 * IAM再次访问登陆处理
 */
function checkIamReLogin() {
  console.log('checkIamReLogin ', router.currentRoute)
  let iamCode = ''
  let toParam = ''
  if (getToken() && (router.currentRoute.fullPath === '/' && router.currentRoute.params && !Object.keys(router.currentRoute.params).length && router.currentRoute.query && !Object.keys(router.currentRoute.query).length) && URLSearchParams) {
    const urlParams = new URLSearchParams(window.location.search)
    if (urlParams) {
      iamCode = urlParams.get('code')
      toParam = urlParams.get('to')
    }
  }
  if (iamCode) {
    const cachedIamCode = localStorage.getItem('IAM_CODE_CACHE')
    if (cachedIamCode && cachedIamCode !== iamCode) {
      Message.warning("存在已经登陆的账号！")
    }
  }
  return {
    'iamCode': iamCode,
    'toParam': toParam
  }
}
